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对豫东黄潮土速效钾含量观测结果表明,1981—1988年间土壤速效钾含量下降,小麦基础产量与交换性钾含量呈y=116.8+1.53x r=0.75极显著线性正相关;植株吸钾量与交换性钾含量呈y=11.189lgx-10.598 r=0.674极显著曲线正相关.589个田间试验结果表明,亩施化肥K_2O_1.5—15公斤,可增产小麦9.5—80公斤,小麦籽粒蛋白、脂肪含量均有所提高,并增强了小麦的抗逆性.本文还提出了本区小麦施用钾肥的技术和参数.
The results of the available potassium content in the yellow soil in eastern Henan showed that the available potassium content decreased from 1981 to 1988 and the base yield of wheat was significantly and positively correlated with the exchangeable potassium content (y = 116.8 + 1.53xr = 0.75). The potassium absorption and exchange The positive correlation of potassium content was y = 11.189lgx-10.598 r = 0.674. The results of 589 field experiments showed that the K_2O_1.5-15 kg of Kushu fertilizer could increase the yield of wheat by 9.5-80 kg, the grain protein and fat content Both increased and enhanced the stress resistance of wheat.This paper also put forward the technology and parameters of applying potassium fertilizer to wheat in this area.